import math
# def abs(x):
#     if x >= 0:
#         return x
#     else:
#         return -x

# print(abs(-50))

# print(abs(-3.14))

# def nop():
#     pass

# if age >= 18
#     pass

# def my_abs(x):
#     if not isinstance(x, (int, float)):
#         raise(TypeError('bad operand type'))
#     if x >= 0:
#         return x
#     else:
#         return -x
# print(my_abs('A'))

# import math

# def move(x, y, step, angle=0):
#     nx = x + step * math.cos(angle)
#     ny = y - step * math.sin(angle)
#     return nx, ny

# def quadratic(a, b, c):

#     x1,x2 = None,None
#     x1 = (-1 *b + math.sqrt(b*b-4*a*c) ) / 2*a
#     x2 = (-1 *b - math.sqrt(b*b-4*a*c) ) / 2*a
#     return (x1,x2)

# print(quadratic(2, 3, 1))
# num = 0
# # # print(quadratic(2, 3, 1))
# for a in range(1, 101):
#     for b in range(1, 101):
#         for c in range(1, 101):
#             if b*b-4*a*c < 0:
#                 continue
#             else:
#                 print(quadratic(a, b, c))
#                 num += 1 # num = num + 1
# print(num)
